I have these two tables and I need a query, that outputs every member that has the lvnr 050056 AND NOT 050054.
I have these two tables
I have tried it with the following query but it does not work right:
SELECT s.matrnr, s.vorname, s.nachname
FROM student s
INNER JOIN teilgenommen t ON s.matrnr = t.matrnr
WHERE (t.lvnr = 050056) AND (t.lvnr != 050054)
Only Martin Huber with the ID 0111111 should be shown, but I get both..
I would be very thankful for any advie
Use exists and not exists:
select s.*
from student s
where exists (select 1
from teilgenommen t
where t.matrnr = s.matrnr and t.lvnr = '050056'
) and
not exists (select 1
from teilgenommen t
where t.matrnr = s.matrnr and t.lvnr = '050054'
);
The leading zeros suggest that lvnr is really stored as a string. If so, then single quotes should be used for the comparison value.
You can do:
SELECT
s.matrnr,
s.vorname,
s.nachname
FROM
student s
INNER JOIN
(
select
matrnr,
max(case when lvnr='050056' then 1 else 0 end) as a,
max(case when lvnr='050054' then 1 else 0 end) as b
from
teilgenommen
group by
matrnr
having a=1 and b=0
) t
ON s.matrnr = t.matrnr
This can also be solved with aggregation and a having clause for filtering:
select s.matrnr, s.vorname, s.nachname
from student s
inner join teilgenommen t on s.matrnr = t.matrnr
group by s.matrnr, s.vorname, s.nachname
having
max(case when t.lvnr = 050056 then 1 else 0 end) = 1
and max(case when t.lvnr = 050054 then 1 else 0 end) = 0
How to avoid NULL values in CASE and SUM by P.Id. Problem is that i have more than one DPB.ProductTypeId in DPB table
SELECT P.[Id],
CASE
WHEN DPB.ProductTypeId = 1 THEN SUM(DPB.BonusAmount)
END AS [CasinoBonus]
FROM Player P
JOIN PlayerBonus DPB ON P.[Id] = DPB.[PlayerId]
group by P.[Id],DPB.ProductTypeId
use case when inside sum
SELECT P.[Id],
sum(CASE
WHEN DPB.ProductTypeId = 1 THEN DPB.BonusAmount
else 0
END) AS [CasinoBonus]
FROM Player P
JOIN PlayerBonus DPB ON P.[Id] = DPB.[PlayerId]
where P.[Id] is not null and DPB.[PlayerId] is not null
group by P.[Id],DPB.ProductTypeId
The case should be the argument to the sum(). You query should look like this:
SELECT P.[Id],
SUM(CASE WHEN DPB.ProductTypeId = 1 THEN DPB.BonusAmount
END) AS [CasinoBonus]
FROM Player P JOIN
PlayerBonus DPB
ON P.[Id] = DPB.[PlayerId]
GROUP BY P.[Id];
Note that you don't want DPB.ProductTypeId in the GROUP BY.
That said, you may simply want:
SELECT P.[Id],
SUM(DPB.BonusAmount) AS [CasinoBonus]
FROM Player P LEFT JOIN
PlayerBonus DPB
ON P.[Id] = DPB.[PlayerId] AND
DPB.ProductTypeId = 1
GROUP BY P.[Id];
Moving the condition to the WHERE clause removes the need for the CASE entirely. The LEFT JOIN keeps all players, even those that don't have that product type.
I have an SQL query that joins 3 tables to return me the required data. The query is as follows:
SELECT (s.user_created,
u.first_name,
u.last_name,
u.email,
s.school_name,
p.plan_name,
substring( a.message, 11), u.phone1)
FROM cb_school s
inner join ugrp_user u
on s.user_created = u.user_id
inner join cb_plan p
on s.current_plan = p.plan_id
inner join audit a
on u.user_id = a.user_id
where s.type = 'sample'
and a.module_short = 'sample-user'
and s.created_time > current_timestamp - interval '10 day';
The query works fine if all the attributes are present. Now for few of my rows, the following value would be a.module_short = 'sample-user' missing. But since I have included it as an AND condition, those rows will not be returned. I am trying to return an empty string for that field if it is present, else the value as per my current query. Is there any way to achieve this.
Think you could possibly use a CASE WHEN statement, like this:
SELECT CASE WHEN a.module_short = 'sample-user' THEN a.module_short
ELSE '' END AS a.module_short
FROM TableA
you can use COALESCE it returns the first not null.
SELECT COALESCE(a.module_short,'')
FROM TableA AS a
SELECT (s.user_created,
u.first_name,
u.last_name,
u.email,
s.school_name,
p.plan_name,
substring( a.message, 11), u.phone1)
FROM cb_school s
INNER JOIN ugrp_user u
ON s.user_created = u.user_id
INNER JOIN cb_plan p
ON s.current_plan = p.plan_id
INNER JOIN audit a
ON u.user_id = a.user_id
AND a.module_short = 'sample-user'
WHERE s.type = 'sample'
AND s.created_time > current_timestamp - interval '10 day';
You want to show all users that have at least one module_short.
If the module_short contains 'sample-user' then it should show it, else it should show NULL as module_short. You only want 1 row per user, even if it has multiple module_shorts.
You can use a CTE, ROW_NUMBER() and the CASE clause for this question.
Example Question
I have 3 tables.
Users: Users with an ID
Modules: Modules with an ID
UserModules: The link between users and modules. You user can have multiple models.
I need a query that returns me all users that have at least 1 module with 2 columns UserName and ModuleName.
I only one 1 row for each user. The ModuleName should only display SQL if the user has that module. Else it should display no module.
Example Tables:
Users:
id name
1 Manuel
2 John
3 Doe
Modules:
id module
1 StackOverflow
2 SQL
3 StackExchange
4 SomethingElse
UserModules:
id module_id user_id
1 1 2
2 1 3
4 2 2
5 2 3
6 3 1
7 3 3
8 4 1
9 4 3
Example Query:
with CTE as (
select
u.name as UserName
, CASE
WHEN m.module = 'SQL' THEN 'SQL' ELSE NULL END as ModuleName
, ROW_NUMBER() OVER(PARTITION BY u.id
ORDER BY (CASE
WHEN m.module = 'SQL' THEN 'Ja' ELSE NULL END) DESC) as rn
from UserModules as um
inner join Users as u
on um.user_id = u.id
inner join Modules as m
on um.module_id = m.id
)
select UserName, ModuleName from CTE
where rn = 1
Example Result:
UserName ModuleName
Manuel NULL
John SQL
Doe SQL
Your query would look like this:
with UsersWithRownumbersBasedOnModule_short as (
SELECT s.user_created,
u.first_name,
u.last_name,
u.email,
s.school_name,
p.plan_name,
substring( a.message, 11),
u.phone1)
CASE
WHEN a.module_short = 'sample-user'
THEN a.module_short
ELSE NULL
END AS ModuleShort
ROW_NUMBER() OVER(PARTITION BY u.user_id ORDER BY (
CASE
WHEN a.module_short = 'sample-user'
THEN a.module_short
ELSE NULL
END) DESC) as rn
FROM cb_school s
inner join ugrp_user u
on s.user_created = u.user_id
inner join cb_plan p
on s.current_plan = p.plan_id
inner join audit a
on u.user_id = a.user_id
where s.type = 'sample'
and s.created_time > current_timestamp - interval '10 day';)
select * from UsersWithRownumbersBasedOnModule_short
where rn = 1
PS: I removed a lose bracket after SELECT and your SUBSTRING() is missing 1 parameter, it needs 3.
I need a select which brings two lines, one with the number of people with the " number of hits " > 0 and the other line with the number of people with the " number of hits " = 0
SELECT u.name as 'Usuário',u.full_name as 'Nome do Usuário',count(l.referer) as 'Número de Acessos'
FROM mmp_user u
LEFT JOIN MMP_MMPUBLISH_LOG l
on u.id=l.user_id
AND l.event_date between '2015-08-01' and '2015-08-08'
group by u.name,u.full_name
order by count(l.referer) desc
I have,
151 Users
9 accessed and
142 not accessed.
But i don't return this values in select, help me please.
Table mmp_user fields (ID,CREATED_BY,AVATAR_ID,CREATION_DATE,EMAIL,FULL_NAME,LAST_EDITED_BY,LAST_EDITION_DATE,NAME,OBSERVATION,USER_PASSWORD,PASSWORD_REMINDER,SIGNATURE,STATUS,ADMINISTRATOR,DESIGNER,SECURITY_OFFICE,PUBLISHER,BRANCH_ID,DEPARTMENT_ID,EXTENSION,PHONE,COMPANY_ID,POSITION,ADMISSION_DATE,PASSWORD_LAST_EDITION_DATE,DISMISSED_DATE,NEWSLETTER,EXPIRE_DATE,COMPANY,BRANCH,DEPARTMENT,AREA_ID,SITE,USER_NUMBER,PREFIX_HOME_PHONE,PREFIX_MOBILE_PHONE,ADDRESS,ADDRESS_COMPLEMENT,ADDRESS_TYPE,CITY,NEIGHBORHOOD,STATE,ZIP_CODE,BIRTHDATE,GENDER,HOME_PHONE,MOBILE_PHONE,CPF,MARIAGE_STATUS,NATIONALITY,RG,EDUCATION,URL_SITE,FIRST_NAME,LAST_NAME,ID_SAP,PASSWORD_GAFISA,NICKNAME,CODE_POSITION,CREATION_USER_ORIGIN,LEVEL_POSITION,BIRTH_DATE_VISIBILITY,HOME_PHONE_COUNTRY_PREFIX,HOME_PHONE_VISIBILITY,MOBILE_PHONE_COUNTRY_PREFIX,MOBILE_PHONE_VISIBILITY,AREA_PREFIX,COUNTRY_PREFIX,PHONE_OBSERVATION,RESPONSIBLE,RESOURCE_ID,AVATAR_RF_ID,RESOURCE_AVATAR_ID,AVATAR_URL_LUCENE,avatarurl,PASSWORD_EXCHANGE,USER_NAME_EXCHANGE,DOMAIN_EXCHANGE,I18N,LAST_IMPORT_FILE,HIERARCHY_POSITION,SECRET_NICKNAME,PROFILE_TYPE,NOT_VIEW_USER,CHANGE_POSITION_DATE,DISTINGUISHED_NAME,OU_USER,AUTH_TOKEN,AUTH_TOKEN_EXPIRATION)
TableMMP_MMPUBLISH_LOG fields (ID,MMPUBLISH_LOG_TYPE,EVENT_DATE,USER_ID,TRANSACTION_NAME,USER_IP,USER_LOGIN,USER_NAME,SESSION_ID,REFERER,PUBLISHING_OBJECT_ID,PUBLISHING_OBJECT_NAME,PHASE_ID,PHASE_NAME,PHASE_COMMENT,ACCESS_URL,HOME_PAGE_ID,HOMEPAGE_ID,phaseComment,phaseId,phaseName,PO_VERSION_NUMBER)
Thanks
You could wrap this query with another query and apply a case expression to the count:
SELECT access_code, COUNT(*)
FROM (SELECT u.name,
u.full_name,
CASE WHEN COUNT(l.referer) > 0 THEN 'access'
ELSE 'no access'
END as access_code
FROM mmp_user u
LEFT JOIN mmp_mmpupluish_log l ON
u.id=l.user_id AND
l.event_date BETWEEN '2015-08-01' AND '2015-08-08'
GROUP BY u.name, u.full_name) t
GROUP BY access_code
ORDER BY access_code ASC
SELECT u.name Usuário, u.full_name [Nome do Usuário],
count(l.referer) [Número de Acessos],
Sum(case when NumberOfHits = 0 then 1 else 0 end) ZeroHitsCount,
Sum(case when NumberOfHits > 0 then 1 else 0 end) HasSomeHitsCount
FROM mmp_user u
LEFT JOIN MMP_MMPUBLISH_LOG l
on u.id=l.user_id
AND l.event_date between '2015-08-01' and '2015-08-08'
group by u.name, u.full_name
order by count(l.referer) desc
Use a case statement:
SELECT (case when l.referer is null then 'Not Accessed'
else 'Accessed'
end) as which,
count(*) as 'Número de Acessos'
FROM mmp_user u LEFT JOIN
MMP_MMPUBLISH_LOG l
on u.id = l.user_id AND
l.event_date between '2015-08-01' and '2015-08-08'
group by (case when l.referer is null then 'Not Accessed'
else 'Accessed'
end)
order by count(l.referer) desc;
Actually, the above counts the number of accesses. One way to get the number of users is to use count(distinct u.id). Another way uses a subquery:
select AccessType, count(*)
from (select u.*,
(case when exists (select 1
from MMP_MMPUBLISH_LOG l
where u.id = l.user_id AND
l.event_date between '2015-08-01' and '2015-08-08'
)
then 'Accessed' else 'Not Accessed'
end) as AccessType
from mmp_user u
) u
group by AccessType;
I have this query, it's supposed to return results of non validated accounts in a database, that were created after a certain date. I keep getting this error and I'm not sure how to eliminate it. Here is the query:
select count(*) (nolock)
from dbo.[User]
where ID is not null
and UserStatusID!=2
and CreateDateTime>='5/1/2012'
and not exists (select userid from dbo.UserValidation where dbo.[User].UserID=dbo.UserValidation.UserID)
It errors out on the "where dbo.[User].UserID=dbo.UserValidation.UserID" What am I doing wrong here?
Try aliasing the tables:
select count(*) (nolock)
from dbo.[User] u
where ID is not null
and UserStatusID != 2
and CreateDateTime >= '5/1/2012'
and not exists (select uv.userid from dbo.UserValidation uv where u.UserID = uv.UserID)
Without the schema:
select count(*) (nolock)
from [User] u
where ID is not null
and UserStatusID != 2
and CreateDateTime >= '5/1/2012'
and not exists (select uv.userid from UserValidation uv where u.UserID = uv.UserID)
While doing a JOIN it's always better to explicitly qualify all the columns in query like below.
select count(u.userid)
from [User] u
where u.ID is not null
and u.UserStatusID != 2
and u.CreateDateTime >= '5/1/2012'
and not exists
(
select uv.userid
from UserValidation uv
where uv.UserID = u.UserID
)